Research on Chemical Intermediates最新文献_第6页

Structures, stability and electronic properties of the NH3 adsorbed and embedded NiBm−1Nm (m = 48, 72 and 96) tubular clusters 吸附和嵌入 NH3 的 NiBm-1Nm（m = 48、72 和 96）管状团簇的结构、稳定性和电子特性

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-07-17 DOI: 10.1007/s11164-024-05341-2

Jia-cong Li, Zhi Li, Zhen Zhao

{"title":"Structures, stability and electronic properties of the NH3 adsorbed and embedded NiBm−1Nm (m = 48, 72 and 96) tubular clusters","authors":"Jia-cong Li, Zhi Li, Zhen Zhao","doi":"10.1007/s11164-024-05341-2","DOIUrl":"https://doi.org/10.1007/s11164-024-05341-2","url":null,"abstract":"The structures, stability and electronic properties of the Ni-doped boron nitride tubular clusters (NiBm−1Nm), NH3 adsorption on the NiBm−1Nm (NH3NiBm−1Nm) and NH3 embedded into the NiBm−1Nm (NH3@NiBm−1Nm) (m = 48, 72 and 96) clusters have been investigated by using density functional theory. The results reveal that the diameters of the NiBm−1Nm clusters have almost no effect on the NH3 adsorption. The diameter of the NiB47N48 clusters is small enough to accommodate the NH3 molecules, and the appropriate diameter of the NiB71N72 clusters occurs to embed the NH3 molecules. The NH3 molecules prefer to adsorb on rather than embed into the NiBm−1Nm clusters. The charge transfer between the NH3 molecules and the NiBm−1Nm clusters is limit, in the range of 0.002–0.221 |e|. The adsorption between the NH3 molecules and the NiBm−1Nm clusters is chemical process. In a word, the curvature effects of the Ni-doped boron nitride nanotubes with various diameters on NH3 adsorption are restrict.","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141717552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile synthesis of novel bi-heteroatom functionalized hyper-crosslinked porous polymers with efficient adsorption of methylene blue and methyl orange 新型双杂原子官能化超交联多孔聚合物的简易合成及其对亚甲基蓝和甲基橙的高效吸附作用

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-07-17 DOI: 10.1007/s11164-024-05346-x

Xiaolei Fu, Yan He, Zhulei Guo, Mingfan Chen, Wenlong Du, Yuqin Zeng, Dingzhong Yuan, Bing Na

{"title":"Facile synthesis of novel bi-heteroatom functionalized hyper-crosslinked porous polymers with efficient adsorption of methylene blue and methyl orange","authors":"Xiaolei Fu, Yan He, Zhulei Guo, Mingfan Chen, Wenlong Du, Yuqin Zeng, Dingzhong Yuan, Bing Na","doi":"10.1007/s11164-024-05346-x","DOIUrl":"https://doi.org/10.1007/s11164-024-05346-x","url":null,"abstract":"In this work, we designed and synthesized two novel bi-heteroatom functionalized hyper-crosslinked porous polymers (HCP-CT and HCP-CF) through a simple one-step Friedel–Crafts alkylation reaction. The resulted polymers N/S bi-heteroatom functionalized polymer HCP-CT and N/O bi-heteroatom functionalized polymer HCP-CF both have good adsorption property for organic dyes such as methyl orange (MO) and methylene blue (MB) in aqueous solution due to its rich pore structure, high specific surface area and rich-heteroatoms of pore surface. It is worth mentioned that the maximum adsorption capacity (qmax) of cationic dye MB by the porous polymer HCP-CT at room temperature was reached up to 1571.46 mg/g, which is much higher than that of most reported porous materials. Furthermore, the adsorption capacity of HCP-CT for the cationic dye MB was more than seven times that of the anionic dye MO (qmax = 212.77 mg/g). Also, the polymer HCP-CF for the MB adsorption capacity (qmax = 352.11 mg/g) was more than twice higher than that of anionic dye MO (qmax = 131.75 mg/g). The above trends may be because of the stronger electrostatic interaction between the negatively charged N-S/O bi-heteroatom of HCP-CT and HCP-CF with the cationic dye MB than that of MO. In addition, the removal percentage of polymers HCP-CT and HCP-CF still remained above 80% after five adsorption–desorption cycles. Hence, this work may provide a convenient synthetic route to develop a novel hyper-crosslinked polymer with high capacity for the entrapment of dyes from aqueous solution.","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141717550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the versatility of 5-sulfosalicylic acid dihydrate as catalyst in 3-pyrrolin-2-one Synthesis 探索 5-磺基水杨酸二水合物作为 3-吡咯啉-2-酮合成催化剂的多功能性

IF 2.8 3区化学

Research on Chemical Intermediates Pub Date : 2024-07-16 DOI: 10.1007/s11164-024-05348-9

Dhananjay D. Gadge, Pramod S. Kulkarni

引用次数: 0

Mesoporous Cu2O–CuO/O–g-C3N4 nanocomposite with enhanced peroxidase-like activity for the colorimetric H2O2 sensing 具有增强过氧化物酶样活性的介孔 Cu2O-CuO/O-g-C3N4 纳米复合材料，用于比色 H2O2 传感

IF 2.8 3区化学

Research on Chemical Intermediates Pub Date : 2024-07-15 DOI: 10.1007/s11164-024-05333-2

Shemeena Mullakkattuthodi, B. Narayanan

引用次数: 0

Hydrothermally synthesized MoS2 NFs toward efficient supercapacitor and fast photocatalytic degradation of MB 水热合成的 MoS2 NFs 可用于高效超级电容器和甲基溴的快速光催化降解

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-07-13 DOI: 10.1007/s11164-024-05335-0

Pankaj Suthar, Dinesh Patidar

{"title":"Hydrothermally synthesized MoS2 NFs toward efficient supercapacitor and fast photocatalytic degradation of MB","authors":"Pankaj Suthar, Dinesh Patidar","doi":"10.1007/s11164-024-05335-0","DOIUrl":"https://doi.org/10.1007/s11164-024-05335-0","url":null,"abstract":"MoS2 stands out as a distinctive material, owing to its two-dimensional structure, with promising potential across various domains notably in energy storage and photocatalysis. In the present work, a pH-assisted hydrothermal approach (one step) has been utilized to synthesize MoS2 nanoflowers (NFs) using ammonium molybdate and thiourea. Characterization of the prepared MoS2 NFs was conducted using XRD, FESEM, HRTEM, FTIR, Raman, UV–Vis, PL, BET and XPS techniques. XRD analysis reveals the hexagonal structure of the prepared NFs, while SEM & TEM images confirm the flower-like morphology consisting of many thin petals. Band gap energy determined through the absorption spectrum is 1.9 eV. Notably, the PL spectrum exhibits a strong and broad peak at 688 nm attributed to band-to-band transition indicating multilayer formation of MoS2 NFs, which is further confirmed by Raman spectroscopy. XPS also confirms the formation of MoS2 showing Mo+4 and S−2 valance states. The specific surface area of MoS2 NFs is found to be 108.446 m2 g−1 that is very high compared to similar materials. Electrochemical properties of MoS2 NFs were also investigated showing a specific capacitance of 761 F g−1 at 4 A g−1 with an energy density of 21 Wh kg−1 and a power density of 886 Wkg−1 for the MoS2 NFs-based electrode. Moreover, photocatalytic degradation of MB using MoS2 NFs at different weight contents (10, 15, 20 and 25 mg) was explored demonstrating highest 97% degradation of MB within 90 min with 20 mg photocatalyst loading along with 0.04 min−1 reaction rate. It also shows good reusability for four consecutive cycles. Furthermore, photodegradation mechanism has also been explored.","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of electrochemical depositing and spin coating methods as electrode modification methods in order to ozone production and dye decomposition 比较电化学沉积法和旋涂法作为电极改性方法在臭氧生成和染料分解中的应用

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-07-12 DOI: 10.1007/s11164-024-05344-z

Sudabeh Dalirnasab, Ali Benvidi, Abbas Behjat, Marzieh Dehghan Tezerjani

{"title":"Comparison of electrochemical depositing and spin coating methods as electrode modification methods in order to ozone production and dye decomposition","authors":"Sudabeh Dalirnasab, Ali Benvidi, Abbas Behjat, Marzieh Dehghan Tezerjani","doi":"10.1007/s11164-024-05344-z","DOIUrl":"https://doi.org/10.1007/s11164-024-05344-z","url":null,"abstract":"In the field of electrochemical ozone production, electrodes need to have exceptional catalytic activity, long-term stability, and cost-effectiveness. In this case, TiO2-NTs/SnO2-Sb2O5-NiO electrodes were fabricated using a combination of anodization, electrochemical deposition, spin coating and annealing techniques. The coating of electrodes was analyzed using EDS, XRD and SEM techniques. According to the obtained cyclic voltammetry (CV) data, the TiO2-NTs/SnO2-Sb2O5-NiO electrode revealed a less positive potential for oxygen evolution compared to other constructed electrodes. The conversion of Ti to Ti-NTs improved the ozone production efficiency and resulted in higher concentrations of water-soluble ozone. To evaluate the performance of the electrodes and the corresponding electrocatalytic activity, a textile dye was used as a pollutant. The most effective modified electrode proved to have an impressive decomposition rate of 96% for the cationic yellow 28 dye within a 60-min timeframe. Furthermore, this modified electrode could substantially remove chemical oxygen demand (COD) of up to 53.6% during 60-min electrolysis.","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photocatalytic characterization of BiOCl and BiOBr prepared by polyol-assisted coprecipitation for the elimination of NOx from air 通过多元醇辅助共沉淀法制备的用于消除空气中氮氧化物的 BiOCl 和 BiOBr 的光催化特性分析

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-07-11 DOI: 10.1007/s11164-024-05342-1

A. Martínez-de la Cruz, K. A. Reyna-Cavazos, E. López Cuéllar, R. Morales Ibarra

{"title":"Photocatalytic characterization of BiOCl and BiOBr prepared by polyol-assisted coprecipitation for the elimination of NOx from air","authors":"A. Martínez-de la Cruz, K. A. Reyna-Cavazos, E. López Cuéllar, R. Morales Ibarra","doi":"10.1007/s11164-024-05342-1","DOIUrl":"https://doi.org/10.1007/s11164-024-05342-1","url":null,"abstract":"The BiOCl and BiOBr oxyhalides were prepared by simple coprecipitation in a rich polyol medium at 100 °C where glycerol was used as solvent and mannitol as additive to increase the concentration of –OH groups in the reaction medium. The characterization of the samples was performed by X-ray powder diffraction, scanning electron microscopy, diffusion reflectance spectroscopy, and the specific surface area was studied by (hbox {N}_2) adsorption–desorption isotherms following BET protocol. The photocatalytic activity of BiOCl and BiOBr was determined in the photooxidation of nitric oxide (NO) in air, obtaining values of nitric oxide conversion of 77% and 90%, respectively. The photocatalytic activity is associated to the higher concentration of –OH groups in the medium of reaction that induce a preferential orientation of the crystalline plane (110) in BiOCl and in the formation of the heterojunction (hbox {BiOBr/B}_{24}hbox {O}_{31}hbox {Br}_{10}) in BiOBr. The highly selective reaction of NO photooxidation to innocuous (hbox {NO}_3^-) ions was confirmed with values of 96% BiOCl and 93% BiOBr. Electron paramagnetic resonance measurements determined that the highly oxygen reactive hydroxyl ((cdot hbox {OH})) and superoxide ((cdot hbox {O}_2^-)) radicals rule the NO oxidation photocatalyzed by BiOCl and BiOBr oxyhalides.","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mg0.5Zn0.375Ni0.125Fe2O4: as an efficient and eco-friendly nanocatalyst for one-pot synthesis of tetrahydrodipyrazolopyridines and dihydropyrano[2,3-c] pyrazole under mild reaction conditions Mg0.5Zn0.375Ni0.125Fe2O4：作为一种高效、环保的纳米催化剂，可在温和的反应条件下一锅合成四氢二吡唑并吡啶和二氢吡喃并[2,3-c]吡唑

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-07-09 DOI: 10.1007/s11164-024-05345-y

Leili Heidari, Lotfi Shiri

引用次数: 0

Facile synthesis of mesoporous tungstated zirconia with improved acidity for solvent free Knoevenagel condensation and fine chemical synthesis 为无溶剂克诺文纳格尔缩合和精细化学合成轻松合成具有更强酸性的介孔钨酸氧化锆

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-07-06 DOI: 10.1007/s11164-024-05334-1

Biplab Roy, Anupam Singha Roy, Asoke Prasun Chattopadhyay

{"title":"Facile synthesis of mesoporous tungstated zirconia with improved acidity for solvent free Knoevenagel condensation and fine chemical synthesis","authors":"Biplab Roy, Anupam Singha Roy, Asoke Prasun Chattopadhyay","doi":"10.1007/s11164-024-05334-1","DOIUrl":"https://doi.org/10.1007/s11164-024-05334-1","url":null,"abstract":"Single step surfactant assisted sol–gel technique was adapted to synthesize mesoporous tungstated zirconia (m-WZ). Amorphous WZs, with high surface area, were synthesized after calcination of as-synthesized materials at 550 °C for 6 h. These materials were well characterized by powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. Textural properties were established from N2 adsorption–desorption isotherm, Scanning electron microscope (SEM) and Transmission electron microscopy (TEM). Pyridine adsorbed FTIR and NH3-TPD revealed reasonable amount of Brønsted and Lewis acid sites of m-WZs. m-WZs exhibited outstanding catalytic activities toward solvent free Knoevenagel condensation reaction of different aromatic aldehydes with malononitrile and ethyl cyanoacetate at room temperature. The developed catalysts were also employed to synthesize different industrially important fine chemicals. These catalysts had longer reusability and no visible drops were observed in catalytic activity even after several runs.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and characterization of polyaniline-graphene quantum dots and their potential for Pyrene detection using photoluminescence spectroscopy 聚苯胺-石墨烯量子点的合成与表征及其利用光致发光光谱检测芘的潜力

IF 3.3 3区化学

Research on Chemical Intermediates Pub Date : 2024-07-06 DOI: 10.1007/s11164-024-05340-3

Mahnoush Beygisangchin, Suraya Abdul Rashid, Suhaidi Shafie, Siti Kartom Kamarudin

{"title":"Synthesis and characterization of polyaniline-graphene quantum dots and their potential for Pyrene detection using photoluminescence spectroscopy","authors":"Mahnoush Beygisangchin, Suraya Abdul Rashid, Suhaidi Shafie, Siti Kartom Kamarudin","doi":"10.1007/s11164-024-05340-3","DOIUrl":"https://doi.org/10.1007/s11164-024-05340-3","url":null,"abstract":"The detection of Pyrene, a toxic polycyclic aromatic hydrocarbon, is crucial for environmental monitoring due to its negative impacts on health and ecosystems. While photoluminescence (PL) spectroscopy holds promise for Pyrene detection, its current application is limited. This research aimed to address this gap by developing a novel PL spectroscopy method for Pyrene detection. The method utilizes a simple, low limit of detection (LOD), affordable, rapid, and user-friendly approach. A polyaniline-graphene quantum dot (PANI-GQD) nanocomposite film was synthesized as the sensing layer. For comparison, PL spectroscopy measurements were also taken using GQD and PANI alone. The fabricated thin films were thoroughly characterized using various techniques (FT-IR, UV–Vis, Raman, XRD, FE-SEM, EDX, TGA) to analyze their chemical, optical, physical, and structural properties. The developed PANI-GQD nanocomposite film-based PL spectroscopy successfully detected Pyrene concentrations ranging from 0.001 to 10 × 10–9 mol L−1. Notably, the method achieved an outstanding LOD of 0.40 × 10–9 mol L−1 (S/N = 5) for low-concentration Pyrene detection, surpassing previous limitations. This LOD is well within the WHO's set standards for Pyrene in aquatic environments (3.461 × 10–9 mol L−1). Overall, this research presents a valuable tool for detecting toxic materials relevant to environmental monitoring, with potential for significant socio-economic impact.","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0